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As accident in a nuclear laboratory resu...

As accident in a nuclear laboratory resulting in deposition of a certain amount of radioactive material of half life `18 `days inside the laboratory Tests revealed that the radiation was `64` times more than the permissible level required for save operation of the laboratory what is the minimum number of days after which the laboratory can be considered safe for use?

A

64

B

90

C

108

D

120

Text Solution

Verified by Experts

The correct Answer is:
C
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ALLEN-SIMPLE HARMONIC MOTION-Exercise-05(B)
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  11. Which one of the following statement is WRONG in the context of X- ray...

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  15. If lambda(Cu) is the wavelength of K(alpha) X-ray line of copper (atom...

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  16. A metal is illumimated by light of two different wavelength 248nm and ...

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  17. In a historical experiment to determine Planck's constant, a metal sur...

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  18. The electrostatic energy of Z protons uniformly distributed throughout...

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